Thank you to everyone who participated in the onsite and the open mirror! Here are the solutions:

106414A - Fold Distance

106414B - The String Only Contains a, b, and c

106414C - Cakenap Sort

106414D - Doubting Thomas

106414E - BABA IS LOCKED

106414F - Approximate Three Sum

106414G - Longest Step-function Subsequence

106414H - NP-hard Problem

106414I - Ultimate Nim

106414J - Superset Polygon

106414K - Grid Coloring

106414L - MEXpected Value

106414M - XORzocity

106414N - Primemas

Rutgers Competitive Programming is excited to invite you to participate in the open mirror of the Spring 2026 Rutgers Programming Contest, which will start Saturday, April 11, 2026 at 1:00 PM EDT (UTC-4)!

The problems were prepared and authored by jdurie, nickbelov, nadya271, ScalarField, dbaumg, MattTheNub, snowythecat, and mgoldy925.

The contest is a 5-hour long ICPC-style team contest consisting of 14 problems. Team sizes can be anywhere from 1 to 3 people. Teams of more than one person are kindly requested to only use one computer for the contest.

Please note that this contest contains at least one interactive problem and at least one run-twice problem. Please read the guides for interactive problems and run-twice problems if you are unfamiliar with them.

The contest can be found here: https://mirror.codeforces.com/contests/106414

We would like to thank:

• McPqndq, awoo, AggravatedCow, surajchip2, ContronThePanda, omeganot, Hori, and thehunterjames for testing.
• bobbilyking for his philosophical insights.

• Hudson River Trading

  , the

  Rutgers Computer Science Department

  , and

  Wegmans Food Markets

  for sponsoring.
• MikeMirzayanov for the wonderful Codeforces and Polygon platforms.
• and last but not least,

  You

  for participating!

Good luck, and we hope you enjoy the problems!